Ukrainian military intelligence says about 620,000 Russian soldiers are operating in Ukraine and Kursk. Kyiv believes thousands of troops have entered Ukraine since the start of the year.

Follow the latest news about the Russia Ukraine war. Find reports from the ground, verified videos, maps and expert analysis by BBC correspondents across the world.

Ukraine struck several targets deep inside Russia on Tuesday in what it says is its "most massive" attack of the war so far.

Volodymyr Zelensky says 31,000 Ukrainian soldiers have been killed during Russia's full-scale invasion.

The most senior US general estimates that around 100,000 Russian and 100,000 Ukrainian soldiers have been killed or injured in the war in Ukraine.

On Sunday, Russia claimed to have taken control of the village of Novohrodivka, just 10km from Pokrovsk. Kyiv has not commented but sources told the BBC that Ukrainian forces have …

Russian forces have launched a full-scale invasion of neighbouring Ukraine, attacking locations across the country. A number of people have been killed and thousands have fled their homes.

Ukraine's long-awaited attempt to take back the territories in the east and south of the country, occupied by Russia for the past 18 months, is now in full swing.

Ukrainian President Volodymyr Zelensky has said the war with Russia could end sooner than some people think. "I think that we are closer to peace than we think," he told US broadcaster …

Russia has begun a large-scale military attack on Ukraine, its southern neighbour, on the orders of Russian President Vladimir Putin.